First deal has four possible owners

[Spencer Ross]

Okay, so next week I'm expecting to lock up my first deal. It's probate, the one who called me said he inherited it from his father. However, he said he'll have to gather his other siblings as well. If all four own it, how will I go about getting it under contract? Four contracts? I'm in Arizona by the way. Thank you in advance for your help, I really appreciate it.